Finding the Third Proportional to 5,091,867 and 10,980,891

Step by Step Solution

1. Step 1: Write the proportion equation
   5,091,867 : 10,980,891 = 10,980,891 : x
2. Step 2: Convert to fraction form
   5,091,867/10,980,891 = 10,980,891/x
3. Step 3: Cross multiply
   5,091,867x = 10,980,891 × 10,980,891
4. Step 4: Simplify right side
   5,091,867x = 120,579,967,153,881
5. Step 5: Solve for x
   x = 120,579,967,153,881/5,091,867
6. Step 6: Final answer
   x = 23,680,894.88